Question

Create a bash shell script for a number guessing game. Here are the requirements: a. Your program generates a random number between 0 and 128 and keeps asking the user to guess the number until the user guesses it correctly. b. If the user guesses a number that is lower or higher than the number to be guessed then indicate that information to the user as a ‘low guess’ or a ‘high guess’ so that the user can get to the correct guess quicker. c. The program keeps track on number of guesses taken by the user to get to the correct guess. This is user’s score. d. Your program asks user for the name and adds user’s name and the score in a file that keeps track of the scores by various users. e. At the end of the game, the program displays the top 3 scores (lowest 3 scores) along with the name of the users to conclude the game. John 4 Sam 7 Tony 10

Answer 1

Answer:

Here is the bash shell script:

scorefile="scores_bash"

guess=-1

typeset -i n=0

echo -e "guess.bash - Guess a number between 0 to 128\n"

(( answer = RANDOM % 128 + 0 ))

while (( guess != answer )); do

n=n+1

read -p "Enter guess $n: " guess

if (( guess < answer )); then

 echo "Low guesss"

elif (( guess > answer )); then

 echo "High guess"

fi

done

echo -e "You guessed the number in $n guesses.\n"

read -p "Enter your name: " name

echo $n $name >> $scorefile

echo -e "\nScores"  

sort -n $scorefile

Explanation:

The program creates a scorefile as scores_bash to store the names and scores. Next the program initializes the guess with -1. guess is used to store the guess made by user and n is used to store the number of trials user took to guess the correct number. Next the program prompts the user to: Guess a number between 0 to 128 and generates random numbers from 0 to 128 and store it into answer.  Next the while loop keeps repeating until the user guesses the correct number. If the user guess is less than the correct answer then the program displays the message Low guess otherwise displays High guess. When the user guesses the correct number, the loop breaks and the message You guessed the number in $n guesses. is displayed where in place of $n the number of trials user take to guess the number is displayed. Next the user is asked to enter his name.

echo $n $name >> $scorefile statement adds the n which is the user score and name which is the names of user to the score file.  sort -n $scorefile  sorts the file in ascending order to display the lowest  scores. The screenshot of program with its output is attached.